Does the renewal of the wheel hub bearings require the removal of the wheel bearing housing on Audi A3?

The hub bearings do not need to be removed in order to renew. The procedure entails the removal of the wheel bearing housing leaving the suspension strut in place but it can be removed together. Any self-locking nuts and bolts that have been disturbed in the process of removal are to be replaced. Start by taking off the wheel trim or hub cap and loosening the driveshaft retaining bolt by 90 degrees when the car is on the wheels, and the loosening of the wheel bolts by not going beyond 90 degrees to avoid damaging the wheel bearing. On removing the front roadwheel, jack up the front of the car and place on axle stands after the handbrake has been applied. Unscrew and dismount driveshaft retaining bolt and dismount ABS Wheel sensor along with unbolting the brake hose/wiring bracket off the strut. To take off the brake disc loosen the guide pins and place the hydraulic brake hose inside the caliper, then hold the caliper firmly on the suspension coil spring so as not to strain it. Reassemble Unscrew the splash plate of the wheel bearing housing, and weaken the nut attaching the steering track rod balljoint to the housing, with an Allen key to hold the balljoint pin still in place as necessary. Unscrew the nuts attaching the lower balljoint to lower arm, push the lower arm downwards and tap the driveshaft on the hub splines and remove the bottom of the wheel bearing housing. In the event that the driveshaft is close a puller might be required. Unscrew the nut and loosen the clamp bolt which holds the wheel bearing housing on the strut, and loosen the housing on the strut with a special tool, or a cold chisel of a size suitable to fit the housing. To refit, clean up the splines of the driveshaft outer joint and hub and lubricate with new engine oil. Install the wheel bearing assembly and use hub with the splines of the driveshaft and insert the new hub bolt, which should be hand tightened. Fit the bearing housing of the wheel bearing to the suspension strut and fit the strut-to-wheel bearing housing clamp bolt, correcting the new retaining nut and tightening it to the recommended torque. Install a lower arm ball joint and track rod ball joint and fasten the corresponding nuts to their desired torque. Re-fit splash plate, brake disc, caliper and ABS wheel sensor. Make sure that the outer joint has been pulled squarely into the hub, and re-fit the roadwheel. Install an assistant to push the brake pedal and tighten the driveshaft retaining bolt against the recommended steps, and one can be quite precise with an angle gauge. Lastly, place the vehicle on the ground, screw the vehicle roadwheel bolts, and then re-assemble the wheel trim or hub cap.

How to remove and install the front wheel bearing and wheel hub assembly on Audi A4?

The driveaxle/hub bolt should first be loosened in order to remove the driveaxle and hub assembly. Next, loosen the wheel bolts and lift the vehicle using jackstands and make sure the vehicle is well supported on jackstands, followed by removing the wheel. The second step is to remove the brake caliper, caliper mounting bracket, and brake disc, making sure not to drop the brake caliper but to hold it with the use of wire or rope. Take off the shield by removing the shield mounting bolts and lose the upper control arms by removing them by unscrewing the steering knuckle. Gently insert the knuckle assembly and push the driveaxle out of the hub, it may be necessary to give the CV joint a stroke with a soft-faced hammer out of the hub or a puller may be needed, should the knuckle assembly not push free. Prop the driveaxle, do not overextend the inner CV joint. Lift off the mounting bolts of the hub/bearing assembly at the back of the steering knuckle and lift out the hub/bearing assembly. When it comes to bearing replacement, it is a job that needs professional skills and special tools that may not be available among some people and it is therefore good to trust a professional mechanic. Installation requires the mounting surfaces of the steering knuckle and the driveaxle splines to be smooth and without burrs and nicks and then the hub/bearing assembly should be attached to the steering knuckle and the bolts should be tightened to the recommended torque. Apply grease on the driveaxle splines and attach it to the hub/bearing assembly and install a new driveaxle/hub bolt without tightening it. Re-attach the upper control arms to the steering knuckle, re-fit clamp bolt and self-locking nut and tighten the nut pushing both control arms downward to avert misfitting of the balljoint studs. Install the caliper, caliper mounting bracket and brake disc, attach the fasteners to the recommended torque. Lastly, fit the wheel, dismount the jackstands, and drop the vehicle, then squeeze the driveaxle/hub bolt by positioning an assistant on the brakes, and then screw in the wheel bolts to the advised torque.

Genuine Audi Wheel Hub

Wheel Axle Hub

Select Vehicle by Model
Select Vehicle by VIN

Select Vehicle by Model

Make

Model

Year

Select Vehicle by VIN

For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

59 Wheel Hubs found

View related parts
Audi Front Hub & Bearing Part Number: 5WA-407-621-B
$183.26 MSRP: $256.67
You Save: $73.41 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub & Bearing, Hub Assembly
- Replaces: 5Q0-407-621-E
Fits the following Audi Models:
- Q3 | 2019-2024 | Premium, Premium Plus, Prestige, S-Line Premium, S-Line Premium Plus, S-Line Prestige | 4 Cyl 2.0 L GAS
View related parts
Audi Hub Part Number: 437-501-653
$168.71 MSRP: $236.28
You Save: $67.57 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub
Fits the following Audi Models:
- 200 | 1989-1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1989-1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- 5000 | 1984-1988 | CS, CS Turbo, S, S Turbo | 5 Cyl 2.2 L GAS, 5 Cyl 2.3 L GAS
View More
View related parts
Audi Hub Part Number: 8W0-498-625
$178.50 MSRP: $250.00
You Save: $71.50 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Hub
Fits the following Audi Models:
- A5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- RS5 | 2018-2019 | Base | 6 Cyl 2.9 L GAS
- RS5 Sportback | 2019 | Base | 6 Cyl 2.9 L GAS
- S5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
View More
View related parts
Audi Front Hub Part Number: 893-407-615-A
$185.64 MSRP: $260.00
You Save: $74.36 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub
Fits the following Audi Models:
- 80 | 1988-1990 | Base | 4 Cyl 2.0 L GAS
- 80 Quattro | 1988 | Base | 5 Cyl 2.3 L GAS
- 90 | 1988 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 90 Quattro | 1988 | Base | 5 Cyl 2.3 L GAS
View More
View related parts
Audi Front Hub & Bearing Part Number: 5Q0-407-621-D
$208.24 MSRP: $291.65
You Save: $83.41 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub & Bearing, Hub & Bearing
Fits the following Audi Models:
- A3 | 2022-2024 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A3 Quattro | 2022-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- S3 | 2022-2024 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
View More
View related parts
Audi Rear Hub & Bearing Part Number: 5WA-407-621
$215.69 MSRP: $302.08
You Save: $86.39 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Rear Hub Bearings, Wheel Bearing
Fits the following Audi Models:
- A3 | 2022-2024 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A3 Quattro | 2022-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- RS3 | 2022-2024 | Base | 5 Cyl 2.5 L GAS
- S3 | 2022-2024 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
View More
View related parts
Audi Front Hub & Bearing Part Number: 5WA-407-621-A
$224.90 MSRP: $314.99
You Save: $90.09 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub
- Replaced by: 5WA-407-621-D
Fits the following Audi Models:
- Q3 | 2021-2024 | Premium, Premium Plus, S-Line Premium, S-Line Premium Plus | 4 Cyl 2.0 L GAS
- RS3 | 2022-2024 | Base | 5 Cyl 2.5 L GAS
View related parts
Audi Hub & Bearing Assembly Part Number: 8W0-598-607
$191.02 MSRP: $267.53
You Save: $76.51 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub
Fits the following Audi Models:
- A4 | 2017-2018 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 Quattro | 2017-2018 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A4 allroad | 2017-2018 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS
- A5 Quattro | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- S4 | 2018 | Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
View More
View related parts
Audi Front Hub & Bearing Part Number: 5QF-501-611-D
$221.33 MSRP: $309.99
You Save: $88.66 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub & Bearing, Hub & Bearing
- Replaced by: 5QF-501-611-G
Fits the following Audi Models:
- Q4 e-tron | 2022-2024 | Premium, Premium Plus | BATTERY EV (EV/BEV)
View related parts
Audi Front Hub Part Number: 441-407-615-C
$202.70 MSRP: $283.90
You Save: $81.20 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub
Fits the following Audi Models:
- 200 | 1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- S4 | 1992 | Base | 5 Cyl 2.2 L GAS
- V8 Quattro | 1990-1994 | Base | 8 Cyl 3.6 L GAS, 8 Cyl 4.2 L GAS
View More
View related parts
Audi Front Hub Part Number: 4D0-407-615-F
$229.67 MSRP: $321.67
You Save: $92.00 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub
- Replaces: 4D0-407-615-A
Fits the following Audi Models:
- A6 Quattro | 1998-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 8 Cyl 4.2 L GAS
- A8 | 1997-1999 | Base | 8 Cyl 3.7 L GAS
- A8 Quattro | 1997-1999 | Base | 8 Cyl 4.2 L GAS
- Allroad Quattro | 2001-2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
View More
View related parts
Audi Front Hub & Bearing Part Number: 3QF-407-621-J
$272.00 MSRP: $380.95
You Save: $108.95 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub
Fits the following Audi Models:
- Q4 e-tron | 2022-2024 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- Q4 e-tron Sportback | 2022-2024 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
View related parts
Audi Hub & Bearing Part Number: 3QF-407-621-K
$261.79 MSRP: $366.65
You Save: $104.86 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Hub & Bearing
Fits the following Audi Models:
- Q4 e-tron | 2024 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- Q4 e-tron Sportback | 2024 | Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
View related parts
Audi Front Wheel Bearing Part Number: 4M0-407-625-E
$289.28 MSRP: $405.15
You Save: $115.87 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Bearing
Fits the following Audi Models:
- Q7 | 2017-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV), 6 Cyl 3.0 L GAS, 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- Q8 | 2019-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L MILD HYBRID EV-GAS (MHEV)
- Q8 e-tron | 2024 | Launch Edition, Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- Q8 e-tron Sportback | 2024 | Launch Edition, Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- RS Q8 | 2020-2023 | Base | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
- SQ7 | 2020-2023 | Premium Plus, Prestige | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
- SQ8 | 2020-2023 | Premium Plus, Prestige | 8 Cyl 4.0 L MILD HYBRID EV-GAS (MHEV)
- e-tron Quattro | 2021-2023, 2019 | Chronos Edition, Premium, Premium Plus, Prestige | BATTERY EV (EV/BEV)
- e-tron S | 2022-2023 | Premium Plus, Prestige | BATTERY EV (EV/BEV)
- e-tron S Sportback | 2022-2023 | Premium Plus, Prestige | BATTERY EV (EV/BEV)
View More
View related parts
Audi Front Hub Part Number: 447-407-615-A
$242.76 MSRP: $340.00
You Save: $97.24 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub
Fits the following Audi Models:
- 200 | 1989-1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1989-1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- 5000 | 1984-1988 | CS, CS Turbo, S, S Turbo | 5 Cyl 2.2 L GAS, 5 Cyl 2.3 L GAS
- 5000 Quattro | 1986-1988 | CS, S | 5 Cyl 2.2 L GAS, 5 Cyl 2.3 L GAS
- Quattro | 1984-1985 | Base | 5 Cyl 2.2 L GAS
View More
View related parts
Audi Rear Wheel Bearing Part Number: 8W0-407-625-J
$295.12 MSRP: $413.32
You Save: $118.20 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Bearing
- Replaces: 8W0-407-625-B
Fits the following Audi Models:
- A4 | 2018-2020 | Premium, Premium Plus, Prestige, Titanium | 4 Cyl 2.0 L GAS
- A4 Quattro | 2017-2023 | Premium, Premium Plus, Prestige, Ultra sport | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A4 allroad | 2017-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Quattro | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- A5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 4 Cyl 2.0 L GAS, 4 Cyl 2.0 L MILD HYBRID EV-GAS (MHEV)
- RS5 | 2021-2024, 2018-2019 | Base | 6 Cyl 2.9 L GAS
- RS5 Sportback | 2021-2024, 2019 | Base | 6 Cyl 2.9 L GAS
- S4 | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
- S5 Sportback | 2018-2023 | Premium, Premium Plus, Prestige | 6 Cyl 3.0 L GAS
View More
View related parts
Audi Front Hub Part Number: 4A0-407-615-G
$282.61 MSRP: $395.82
You Save: $113.21 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub
- Replaces: 4B0-407-613-B, 4A0-407-615-D, 4B0-407-613, 4A0-407-615-F, 4B0-407-613-A
Fits the following Audi Models:
- 100 | 1992-1994 | Base, CS, S | 6 Cyl 2.8 L GAS
- 100 Quattro | 1992-1994 | CS | 6 Cyl 2.8 L GAS
- 200 | 1989-1991 | Base | 5 Cyl 2.2 L GAS
- 200 Quattro | 1989-1991 | 20v, 20v Avant, Avant, Base | 5 Cyl 2.2 L GAS
- A4 | 1996-2009 | Avant, Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A4 Quattro | 2000-2009, 1996 | Avant, Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A6 | 1995-2004 | Avant, Base | 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- A6 Quattro | 1995-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
- Allroad Quattro | 2001-2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- RS4 | 2007-2008 | Base, Cabriolet | 8 Cyl 4.2 L GAS
View More
View related parts
Audi Hub Part Number: 4B0-501-653
$254.18 MSRP: $356.00
You Save: $101.82 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub
Fits the following Audi Models:
- A6 Quattro | 2000-2004 | Avant, Base | 6 Cyl 2.7 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS
View related parts
Audi Front Hub Part Number: 8A0-407-615
$254.18 MSRP: $356.00
You Save: $101.82 (29%)
Ships in 1-2 Business Days
ADD TO CART
Product Specifications
- Other Name: Wheel Hub; Front Hub
Fits the following Audi Models:
- 80 | 1988-1992 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 80 Quattro | 1988-1992 | Base | 5 Cyl 2.3 L GAS
- 90 | 1988-1991 | Base | 4 Cyl 2.0 L GAS, 5 Cyl 2.3 L GAS
- 90 Quattro | 1993-1995, 1988-1991 | 20v, Base, CS, Sport | 5 Cyl 2.3 L GAS, 6 Cyl 2.8 L GAS
- Coupe Quattro | 1990-1991 | 20v | 5 Cyl 2.3 L GAS
View More
View related parts
Audi Front Hub Part Number: 357-407-613-B
Product Specifications
- Other Name: Wheel Hub; Front Hub, Hub
- Replaces: 357-407-615, 357-407-615-E
Fits the following Audi Models:
- A4 | 2007-2009, 1996-2001 | Avant, Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.2 L GAS
- A4 Quattro | 1996-2009 | Avant, Base, Cabriolet | 4 Cyl 1.8 L GAS, 4 Cyl 2.0 L GAS, 6 Cyl 2.8 L GAS, 6 Cyl 3.0 L GAS, 6 Cyl 3.2 L GAS
- A6 | 1998-1999 | Base | 6 Cyl 2.8 L GAS
- A6 Quattro | 1998-1999 | Avant, Base | 6 Cyl 2.8 L GAS
- Allroad Quattro | 2003-2005 | Base | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
- S4 | 2005-2006, 2000-2002 | Avant, Base, Cabriolet | 6 Cyl 2.7 L GAS, 8 Cyl 4.2 L GAS
View More

| Page 1 of 3 |Next >

1-20 of 59 Results

Audi Wheel Hub

Audi Wheel Hub ensures steady grip and silky rotation that anchors each rim and keeps friction low so that you can drive confidently and comfortably every day. Audi has earned respect globally with a history of innovation that dates back to early Auto Union days and the brand's modern day e-tron electric models, and the brand boasts quattro all wheel drive technology, Virtual Cockpit screens, and adaptive matrix lighting technology that make every ride safer, smarter, and more exciting. Audi combines sport and clean design so that families, commuters, and enthusiasts alike can enjoy precise handling, vibrant engines, and advanced electric powertrains supported by meticulous German build quality. These strengths give Audi a reputation for pushing technology forward without sacrificing comfort or style. The Wheel Hub itself is located between the axle and brake assembly and houses sealed bearings, splined teeth, and often an integrated ABS sensor in one tough steel housing, which bolts directly to the chassis. Because the Wheel Hub comes as a unit, it makes it easy to replace and reduces the amount of maintenance time and protects the bearings from dirt and moisture that can damage the bearings. Its rigid frame bears the weight of the vehicle, ensures that each wheel is aligned, and transmits torque smoothly to ensure that the traction systems work at their optimal. A healthy Wheel Hub therefore maintains steering accuracy, reduces vibration, and allows the entire Audi lineup to remain stable at any speed.

Stick with genuine OEM Wheel Hub when you need quality that holds up. Audi crafts these parts to hit strict factory specs for every single unit. They also run each part through rigorous checks during production to maintain high quality. You can find exact Audi Wheel Hub you need in our huge stock at AudiPartsGiant.com. You'll love our low, economical prices too. Every OEM part carries a real manufacturer's warranty, so you can buy with confidence. Returns aren't a headache here because our policy is simple. Plus, our speedy delivery gets orders out fast. Shop today and buy with total peace of mind.

Audi Wheel Hub Parts and Q&A

Front Hub & Bearing
5Q0-407-621-D
Q: Does the renewal of the wheel hub bearings require the removal of the wheel bearing housing on Audi A3?
A:
The hub bearings do not need to be removed in order to renew. The procedure entails the removal of the wheel bearing housing leaving the suspension strut in place but it can be removed together. Any self-locking nuts and bolts that have been disturbed in the process of removal are to be replaced. Start by taking off the wheel trim or hub cap and loosening the driveshaft retaining bolt by 90 degrees when the car is on the wheels, and the loosening of the wheel bolts by not going beyond 90 degrees to avoid damaging the wheel bearing. On removing the front roadwheel, jack up the front of the car and place on axle stands after the handbrake has been applied. Unscrew and dismount driveshaft retaining bolt and dismount ABS Wheel sensor along with unbolting the brake hose/wiring bracket off the strut. To take off the brake disc loosen the guide pins and place the hydraulic brake hose inside the caliper, then hold the caliper firmly on the suspension coil spring so as not to strain it. Reassemble Unscrew the splash plate of the wheel bearing housing, and weaken the nut attaching the steering track rod balljoint to the housing, with an Allen key to hold the balljoint pin still in place as necessary. Unscrew the nuts attaching the lower balljoint to lower arm, push the lower arm downwards and tap the driveshaft on the hub splines and remove the bottom of the wheel bearing housing. In the event that the driveshaft is close a puller might be required. Unscrew the nut and loosen the clamp bolt which holds the wheel bearing housing on the strut, and loosen the housing on the strut with a special tool, or a cold chisel of a size suitable to fit the housing. To refit, clean up the splines of the driveshaft outer joint and hub and lubricate with new engine oil. Install the wheel bearing assembly and use hub with the splines of the driveshaft and insert the new hub bolt, which should be hand tightened. Fit the bearing housing of the wheel bearing to the suspension strut and fit the strut-to-wheel bearing housing clamp bolt, correcting the new retaining nut and tightening it to the recommended torque. Install a lower arm ball joint and track rod ball joint and fasten the corresponding nuts to their desired torque. Re-fit splash plate, brake disc, caliper and ABS wheel sensor. Make sure that the outer joint has been pulled squarely into the hub, and re-fit the roadwheel. Install an assistant to push the brake pedal and tighten the driveshaft retaining bolt against the recommended steps, and one can be quite precise with an angle gauge. Lastly, place the vehicle on the ground, screw the vehicle roadwheel bolts, and then re-assemble the wheel trim or hub cap.
Front Hub
4A0-407-615-G
Q: How to remove and install the front wheel bearing and wheel hub assembly on Audi A4?
A:
The driveaxle/hub bolt should first be loosened in order to remove the driveaxle and hub assembly. Next, loosen the wheel bolts and lift the vehicle using jackstands and make sure the vehicle is well supported on jackstands, followed by removing the wheel. The second step is to remove the brake caliper, caliper mounting bracket, and brake disc, making sure not to drop the brake caliper but to hold it with the use of wire or rope. Take off the shield by removing the shield mounting bolts and lose the upper control arms by removing them by unscrewing the steering knuckle. Gently insert the knuckle assembly and push the driveaxle out of the hub, it may be necessary to give the CV joint a stroke with a soft-faced hammer out of the hub or a puller may be needed, should the knuckle assembly not push free. Prop the driveaxle, do not overextend the inner CV joint. Lift off the mounting bolts of the hub/bearing assembly at the back of the steering knuckle and lift out the hub/bearing assembly. When it comes to bearing replacement, it is a job that needs professional skills and special tools that may not be available among some people and it is therefore good to trust a professional mechanic. Installation requires the mounting surfaces of the steering knuckle and the driveaxle splines to be smooth and without burrs and nicks and then the hub/bearing assembly should be attached to the steering knuckle and the bolts should be tightened to the recommended torque. Apply grease on the driveaxle splines and attach it to the hub/bearing assembly and install a new driveaxle/hub bolt without tightening it. Re-attach the upper control arms to the steering knuckle, re-fit clamp bolt and self-locking nut and tighten the nut pushing both control arms downward to avert misfitting of the balljoint studs. Install the caliper, caliper mounting bracket and brake disc, attach the fasteners to the recommended torque. Lastly, fit the wheel, dismount the jackstands, and drop the vehicle, then squeeze the driveaxle/hub bolt by positioning an assistant on the brakes, and then screw in the wheel bolts to the advised torque.